Regents Chemistry June 2022 exam

Front

What is a triple bond?

Back

A triple bond is a type of chemical bond where three pairs of electrons are shared between two atoms, resulting in a total of 6 electrons being shared.

Front

What happens during the breaking of a bond?

Back

Energy is absorbed as a bond is broken.

Front

What is distillation?

Back

Distillation is a separation process that involves heating a liquid to create vapor and then cooling the vapor to create a liquid, used to separate components based on differences in boiling points.

Front

What is an amide?

Back

An amide is a functional group characterized by a carbonyl group (C=O) attached to a nitrogen atom (N). It is commonly found in organic compounds.

Front

How do you calculate heat absorbed using specific heat capacity?

Back

Heat absorbed (q) = mass (m) × specific heat capacity (c) × change in temperature (ΔT).

Front

What is the specific heat capacity of a substance?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius (or 1 Kelvin).

Front

What is the formula for calculating the change in temperature?

Back

Change in temperature (ΔT) = final temperature - initial temperature.

Front

What is the role of energy in chemical reactions?

Back

Energy is either absorbed or released during chemical reactions, depending on whether bonds are broken or formed.

Front

What is chromatography?

Back

Chromatography is a technique used to separate mixtures based on the movement of different components through a stationary phase.

Front

What is electrolysis?

Back

Electrolysis is a chemical process that uses electricity to drive a non-spontaneous reaction, often used to decompose compounds.